Description: This document describes qualification methods for Class IE lead storage batteries and racks to be used in nuclear power generating stations outside of primary containment. Qualification required in ANSI/IEEE Std 279-1971 [1] and IEEE Std 308-1978, [2] can be demonstrated by using the procedures provided in this standard in accordance with IEEE Std 323-1974, [3] . Battery sizing, maintenance, capacity testing, installation, charging equipment and consideration of other type batteries are beyond the scope of this standard.